fatso aftso ftaso tfaso atfso tafso fasto afsto fsato sfato asfto safto ftsao tfsao fstao sftao tsfao stfao atsfo tasfo astfo satfo tsafo stafo fatos aftos ftaos tfaos atfos tafos faots afots foats ofats aofts oafts ftoas tfoas fotas oftas tofas otfas atofs taofs aotfs oatfs toafs otafs fasot afsot fsaot sfaot asfot safot faost afost foast ofast aofst oafst fsoat sfoat fosat ofsat sofat osfat asoft saoft aosft oasft soaft osaft ftsoa tfsoa fstoa sftoa tsfoa stfoa ftosa tfosa fotsa oftsa tofsa otfsa fsota sfota fosta ofsta softa osfta tsofa stofa tosfa otsfa sotfa ostfa atsof tasof astof satof tsaof staof atosf taosf aotsf oatsf toasf otasf asotf saotf aostf oastf soatf osatf tsoaf stoaf tosaf otsaf sotaf ostaf
Note: these 'words' (valid or invalid) are all the permutations of the word fatso. These words are obtained by scrambling the letters in fatso.